net: stmmac: dwmac-rk: Fix disabling set_clock_selection

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commit 7f864458e9 upstream.

On all platforms set_clock_selection() writes to a GRF register. This
requires certain clocks running and thus should happen before the
clocks are disabled.

This has been noticed on RK3576 Sige5, which hangs during system suspend
when trying to suspend the second network interface. Note, that
suspending the first interface works, because the second device ensures
that the necessary clocks for the GRF are enabled.

Cc: stable@vger.kernel.org
Fixes: 2f2b60a0ec ("net: ethernet: stmmac: dwmac-rk: Add gmac support for rk3588")
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20251014-rockchip-network-clock-fix-v1-1-c257b4afdf75@collabora.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Sebastian Reichel 2025-10-14 17:49:34 +02:00 • committed by Greg Kroah-Hartman

parent 2c81312781

commit 41f0bf273b

1 changed files with 5 additions and 4 deletions

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drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c

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